CN109324390A - A kind of low distorted optical inspection is as system and its imaging method - Google Patents
A kind of low distorted optical inspection is as system and its imaging method Download PDFInfo
- Publication number
- CN109324390A CN109324390A CN201811392761.0A CN201811392761A CN109324390A CN 109324390 A CN109324390 A CN 109324390A CN 201811392761 A CN201811392761 A CN 201811392761A CN 109324390 A CN109324390 A CN 109324390A
- Authority
- CN
- China
- Prior art keywords
- lens
- meniscus
- focal power
- shaped lens
- meniscus shaped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/22—Telecentric objectives or lens systems
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lenses (AREA)
Abstract
The present invention relates to a kind of low distorted optical inspections as system, the optics, which is examined, to be made of as system six sheet glass spheric glasses, along optics inspection as from left to right direction is disposed with preceding group of A, diaphragm C, organizes B afterwards system, it is described before group A include the meniscus shaped lens A2 that is negative of the biconvex lens A1 of positive light coke, focal power, focal power be positive meniscus shaped lens A3, it is described after group B include biconvex lens B3 that the meniscus lens B2 that is positive of the meniscus shaped lens B1 that is negative of focal power, focal power, focal power are positive.Optics inspection not only meets object space telecentric system requirement as system, and detection image can be made to keep identical enlargement ratio in certain object distance range, moreover it is possible to make that picture holding uniform luminance is imaged, meet image space telecentric system requirement.Minimum distortion value also ensures the extremely strong reducing power of its imaging.
Description
Technical field
The present invention relates to a kind of low distorted optical inspections as system and its imaging method.
Background technique
Instantly field of industrial manufacturing is quickly grown, and optical detection has become one of indispensable demand of artificial intelligence field,
More stringent requirements are proposed to Systems for optical inspection for the detection environment of miscellaneous complexity.There are many finder screen heads for existing market
In product testing.But these camera lenses are harsh to detection environmental requirement, should stablize constant temperature again, and most of camera lens
It is unable to satisfy and eliminates parallax, eliminates the functions such as distortion.This kind of camera lens is often unilateral telecentric lens, and cost is quite high, structure ruler
It is very little big, it is high to detection environmental requirement.
Summary of the invention
The purpose of the present invention is places against the above deficiency, provide a kind of simply low distorted optical inspection of structure as system
And its imaging method.
The technical scheme is that a kind of low distorted optical inspection is as system, the optics inspection is as system is by six sheet glass
Spheric glass is constituted, and along optics inspection as from left to right direction is disposed with preceding group of A, diaphragm C, organizes B afterwards system, organizes A before described
Meniscus shaped lens A3 that meniscus shaped lens A2 that biconvex lens A1 including positive light coke, focal power are negative, focal power are positive, institute
Stating rear group of B includes the lenticular that the meniscus lens B2 that is positive of the meniscus shaped lens B1 that is negative of focal power, focal power, focal power are positive
Mirror B3.
Further, the meniscus shaped lens A3 that the meniscus shaped lens A2 and focal power that the preceding group A focal power is negative are positive
Glue pellet is organized before constituting, and the meniscus shaped lens B1 that B focal power is negative is organized after described and the meniscus lens B2 that focal power is positive is constituted
After organize glue pellet.
Further, the focal power of the preceding group A is positive, and the rear focal power for organizing B is negative.
Further, set the focal length of optical system as f, biconvex lens A1, meniscus shaped lens A2, meniscus shaped lens A3,
Meniscus shaped lens B1, meniscus lens B2, biconvex lens B3 are respectively f1, f2, f3, f4, f5, f6；Wherein meet with focal length f following
Ratio: 0.01 < f1/f < 0.02；-0.018<f2/f<-0.016；0.013<f3/f<0.016；-0.012<f4/f<-0.01；
0.014<f5/f<0.017；0.011<f6/f<0.014.
Further, f1 and f2 must satisfy: 0.9 < f1/f2 < 1.2.
Further, the material that the biconvex lens A1 is used is crown board material, the material of the meniscus shaped lens A2 use
Material is flint material, and the material that the meniscus shaped lens A3 is used is crown board material, the material of the meniscus shaped lens B1 use
For flint material, the material that the meniscus lens B2 is used is crown board material, and the material that the biconvex lens B3 is used is crown board
Material.
Further, the air spacing between the biconvex lens A1 to meniscus shaped lens A2 is 0.1mm, and falcate is saturating
The air distance of air the spacing 46.9mm, diaphragm C to meniscus shaped lens B1 of mirror A3 to diaphragm C are 41.9mm, meniscus lens B2
Air distance to biconvex lens B3 is 0.1mm, and the air distance of biconvex lens B3 to image planes is 35.1mm.
Further, the air gap between the preceding group A and rear group B is 88.8mm.
A kind of low distorted optical inspection sequentially includes the following steps: light from left to right successively through double as the imaging method of system
It is imaged after convex lens A1, meniscus shaped lens A2, meniscus shaped lens A3, meniscus shaped lens B1, meniscus lens B2, biconvex lens B3.
Compared with prior art, the invention has the following advantages: optics inspection is made of as system six spherical glass,
Using double gauss structure, lens distortion and susceptibility can be effectively reduced, tolerance manages brought cost when reducing manufacture
It can guarantee the picture reducing power of its superelevation simultaneously；Its construction profile is exquisite, and manufacturing cost is low；Not only meet wanting for object space telecentricity
The problems such as asking, while being able to satisfy the requirement of image space telecentricity, effectively solving picture colour cast, brightness irregularities.
Detailed description of the invention
The invention patent is further illustrated with reference to the accompanying drawing.
Fig. 1 is that the optics of the embodiment of the present invention is examined as system schematic.
Fig. 2 is the optics inspection of the embodiment of the present invention as system passes letter figure.
Fig. 3 is that the optics of the embodiment of the present invention is examined as systematical distortion figure.
In figure: before A organize A, C diaphragm C, B after organize B, A1 biconvex lens A1, A2 meniscus shaped lens A2, A3 meniscus shaped lens A3,
B1 meniscus shaped lens B1, B2 meniscus lens B2, B3 biconvex lens B3.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
As shown in Figures 1 to 3, a kind of low distorted optical inspection is as system, and the optics inspection is as system is by six sheet glass spherical mirrors
Piece is constituted, along optics inspection as from left to right direction is disposed with preceding group of A, diaphragm C, organizes B afterwards system, it is described before group A include just
Meniscus shaped lens A3 that meniscus shaped lens A2 that the biconvex lens A1 of focal power, focal power are negative, focal power are positive, it is described after group
B includes the biconvex lens B3 that the meniscus lens B2 that is positive of the meniscus shaped lens B1 that is negative of focal power, focal power, focal power are positive.
In the present embodiment, the meniscus shaped lens A2 that the preceding group A focal power is negative and the falcate that focal power is positive are saturating
Mirror A3 organizes glue pellet before constituting, the meniscus shaped lens B1 that B focal power is negative and the meniscus lens B2 that focal power is positive are organized after described
Glue pellet is organized after composition.
In the present embodiment, the focal power of the preceding group A is positive, and the rear focal power for organizing B is negative.
In the present embodiment, the focal length of optical system is set as f, and biconvex lens A1, meniscus shaped lens A2, falcate are saturating
Mirror A3, meniscus shaped lens B1, meniscus lens B2, biconvex lens B3 are respectively f1, f2, f3, f4, f5, f6；It is wherein full with focal length f
It is enough lower ratio: 0.01 < f1/f < 0.02；-0.018<f2/f<-0.016；0.013<f3/f<0.016；-0.012<f4/f<-
0.01；0.014<f5/f<0.017；0.011<f6/f<0.014.
In the present embodiment, f1 and f2 must satisfy: 0.9 < f1/f2 < 1.2.
In the present embodiment, for crown board material, the meniscus shaped lens A2 is used the material that the biconvex lens A1 is used
Material be flint material, the material that the meniscus shaped lens A3 is used for crown board material, meniscus shaped lens B1 use
Material be flint material, the material that the meniscus lens B2 is used for crown board material, the material that the biconvex lens B3 is used for
Crown board material.
In the present embodiment, the air spacing between the biconvex lens A1 to meniscus shaped lens A2 is 0.1mm, bent moon
The air distance of air the spacing 46.9mm, diaphragm C to meniscus shaped lens B1 of shape lens A3 to diaphragm C are 41.9mm, and bent moon is saturating
The air distance of mirror B2 to biconvex lens B3 is 0.1mm, and the air distance of biconvex lens B3 to image planes is 35.1mm.
In the present embodiment, the air gap between the preceding group A and rear group B is 88.8mm.
A kind of low distorted optical inspection sequentially includes the following steps: light from left to right successively through double as the imaging method of system
It is imaged after convex lens A1, meniscus shaped lens A2, meniscus shaped lens A3, meniscus shaped lens B1, meniscus lens B2, biconvex lens B3.
In the present embodiment, following optical index has been reached by the optical system that above-mentioned lens set is constituted: optics inspection
As system working distance is 110mm, optical distortion≤- 0.005%, object space telecentricity≤0.02 °, image space telecentricity≤0.05 °, light
Coke L ' >=35.1mm after, optical system overall length are less than 146mm, and applicable chip size is 2/3 ".
In the present embodiment, the parameter of each eyeglass is as shown in the table:
In the present embodiment, as shown in Fig. 2, optics inspection as system in 60 lines to the transfer function values at place 0.5 or so, each view
For wild mtf value close to diffraction limit, imaging level is high, and picture uniformity is good.
In the present embodiment, as shown in figure 3, optics inspection is as optical distortion remains close to 0 to system at absolute visual field, make be
System possesses very strong picture reducing power.
In conclusion a kind of low distorted optical inspection provided by the invention is as system, which distorts close to 0, can have
Effect reduces distortion degree, while object, image space bilateral reach telecentricity requirement, can be while detecting different object distances object
It keeps identical multiplying power to carry out image restoring, is selected by focal power balance and material, effectively relax its suitable environment temperature
Degree requires, it is made still to be able to maintain good inspection under certain harsh temperature environment as effect.
Above-listed preferred embodiment, has been further described the object, technical solutions and advantages of the present invention, is answered
Understand, the foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of low distorted optical inspection is as system, it is characterised in that: the optics inspection is as system is by six sheet glass spheric glass structures
At, along optics inspection as from left to right direction is disposed with preceding group of A, diaphragm C, organizes B afterwards system, it is described before group A include positive light focus
Meniscus shaped lens A3 that meniscus shaped lens A2 that the biconvex lens A1 of degree, focal power are negative, focal power are positive, it is described after organize B packet
Include the biconvex lens B3 that the meniscus lens B2, focal power that the meniscus shaped lens B1, focal power that focal power is negative be positive are positive.
2. low distorted optical inspection according to claim 1 is as system, it is characterised in that: group A focal power is negative before described
The meniscus shaped lens A3 that meniscus shaped lens A2 and focal power are positive organizes glue pellet before constituting, the rear group B focal power is negative curved
The meniscus lens B2 that moon-shaped lens B1 and focal power are positive organizes glue pellet after constituting.
3. low distorted optical inspection according to claim 1 is as system, it is characterised in that: the focal power of group A is positive before described,
The focal power for organizing B afterwards is negative.
4. low distorted optical inspection according to claim 1 is as system, it is characterised in that: set the focal length of optical system as
F, biconvex lens A1, meniscus shaped lens A2, meniscus shaped lens A3, meniscus shaped lens B1, meniscus lens B2, biconvex lens B3 points
It Wei not f1, f2, f3, f4, f5, f6；Wherein meet following ratio: 0.01 < f1/f < 0.02 with focal length f；-0.018<f2/f<-
0.016；0.013<f3/f<0.016；-0.012<f4/f<-0.01；0.014<f5/f<0.017；0.011<f6/f<0.014.
5. low distorted optical inspection according to claim 4 is as system, it is characterised in that: f1 and f2 must satisfy: 0.9 < f1/
f2<1.2。
6. low distorted optical inspection according to claim 1 is as system, it is characterised in that: the material that the biconvex lens A1 is used
Material is crown board material, and the material that the meniscus shaped lens A2 is used is flint material, the material of the meniscus shaped lens A3 use
For crown board material, the material that the meniscus shaped lens B1 is used is flint material, and the material that the meniscus lens B2 is used is crown
Board material, the material that the biconvex lens B3 is used is crown board material.
7. low distorted optical inspection according to claim 1 is as system, it is characterised in that: the biconvex lens A1 to bent moon
Air spacing between shape lens A2 is 0.1mm, and air the spacing 46.9mm, diaphragm C of meniscus shaped lens A3 to diaphragm C are to curved
The air distance of moon-shaped lens B1 is 41.9mm, and the air distance of meniscus lens B2 to biconvex lens B3 is 0.1mm, biconvex lens
The air distance of B3 to image planes is 35.1mm.
8. low distorted optical inspection according to claim 1 is as system, it is characterised in that: before described between group A and rear group B
The air gap is 88.8mm.
9. a kind of low distorted optical inspection is as the imaging method of system, which is characterized in that using according to claims 1-8 any
The low distorted optical inspection of kind sequentially includes the following steps: light from left to right successively through biconvex lens A1, meniscus shaped lens as system
It is imaged after A2, meniscus shaped lens A3, meniscus shaped lens B1, meniscus lens B2, biconvex lens B3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392761.0A CN109324390B (en) | 2018-11-21 | 2018-11-21 | Low-distortion optical image detection system and imaging method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392761.0A CN109324390B (en) | 2018-11-21 | 2018-11-21 | Low-distortion optical image detection system and imaging method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109324390A true CN109324390A (en) | 2019-02-12 |
| CN109324390B CN109324390B (en) | 2023-05-09 |
Family
ID=65258801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811392761.0A Active CN109324390B (en) | 2018-11-21 | 2018-11-21 | Low-distortion optical image detection system and imaging method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109324390B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467562A (en) * | 2014-09-05 | 2016-04-06 | 玉晶光电(厦门)有限公司 | Optical imaging lens and electronic device |
| CN105807391A (en) * | 2016-01-04 | 2016-07-27 | 玉晶光电(厦门)有限公司 | Optical lens group |
| CN206710686U (en) * | 2017-03-20 | 2017-12-05 | 信华精机有限公司 | A kind of optical lens of compact |
-
2018
- 2018-11-21 CN CN201811392761.0A patent/CN109324390B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467562A (en) * | 2014-09-05 | 2016-04-06 | 玉晶光电(厦门)有限公司 | Optical imaging lens and electronic device |
| CN105807391A (en) * | 2016-01-04 | 2016-07-27 | 玉晶光电(厦门)有限公司 | Optical lens group |
| CN206710686U (en) * | 2017-03-20 | 2017-12-05 | 信华精机有限公司 | A kind of optical lens of compact |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109324390B (en) | 2023-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106199921B (en) | Wide-angle lens | |
| CN108445611A (en) | Without the high-resolution tight shot of thermalization | |
| CN103837963B (en) | Novel long-wave infrared athermalization camera lens with high light flux | |
| CN105388591B (en) | The big target surface in large aperture type monitoring camera and its imaging method round the clock | |
| CN106932888A (en) | A kind of 360 ° of panorama fish eye lenses | |
| CN208818918U (en) | A kind of novel wide-angle imaging lens optical system | |
| CN109254388B (en) | Telecentric optical imaging system and imaging method | |
| CN105334598A (en) | Optical lens | |
| CN107045183A (en) | One kind is without the wide working distance 6MP machine visual lens of thermalization | |
| CN110361849A (en) | Folding, which spreads out, mixes mobile lens | |
| CN107589517B (en) | Imaging lens | |
| CN108845418A (en) | A kind of high-resolution machine vision optical system | |
| CN108845417A (en) | One kind disappears parallax machine vision optical system | |
| CN109782423A (en) | Autozoom telephoto lens | |
| CN105403981A (en) | High-image quality optical lens | |
| CN109239892B (en) | Fixed-magnification optical image detection system and imaging method thereof | |
| CN209070199U (en) | A kind of low distorted optical inspection is as system | |
| CN206773278U (en) | One kind is without the wide working distance 6MP machine visual lens of thermalization | |
| CN108761733A (en) | Large aperture, high pixel, high/low temperature be confocal, double light path optical system | |
| CN109324390A (en) | A kind of low distorted optical inspection is as system and its imaging method | |
| CN107884905B (en) | Broad angle lens group | |
| CN109375343A (en) | A kind of 1.1mm vehicle-mounted high-definition looks around optical system and its imaging method | |
| CN109116523A (en) | Five chip broad angle lens groups | |
| CN108169881A (en) | Automatic focusing camera camera lens | |
| CN209070208U (en) | Telecentric optics are examined as system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |